1. A.K. Majumdar,Naturwiss., 44 /1957/ 51.
2. Z.R. Turel, B.C. Haldar,Radiochem. Radioanal. Lett., 49 /1981/ 59.
3. Z.R. Turel, B.C. Haldar,Radiochem. Radioanal. Lett., 52 /1982/ 37.
4. J. Swaminathan, Z.R. Turel, B.C. Haldar,Radiochem. Radioanal. Lett., 49 /1981/ 387.
5. A.D. Pujary, Z.R. Turel, B.C. Haldar,Radiochem. Radioanal. Lett., 53 /1982/ 133.